CSharpTradeOffers.Trading.EconServiceHandler.SendTradeOfferWithLink C# (CSharp) Метод

        public SendOfferResponse SendTradeOfferWithLink(ulong partnerSid, string token, string tradeoffermessage,
            string serverid, TradeOffer offer, CookieContainer container)
        {
            const string url = "https://steamcommunity.com/tradeoffer/new/send";
            container.Add(new Cookie("bCompletedTradeOfferTutorial", "true") { Domain = "steamcommunity.com" });
            string sessionid = (from Cookie cookie in container.GetCookies(new Uri("https://steamcommunity.com"))
                                where cookie.Name == "sessionid"
                                select cookie.Value).FirstOrDefault();

            CEconTradeOffer offerToken = new CEconTradeOffer { TradeOfferAccessToken = token };

            var data = new Dictionary<string, string>
            {
                {"sessionid", sessionid},
                {"serverid", serverid},
                {"partner", partnerSid.ToString()},
                {"tradeoffermessage", tradeoffermessage},
                {"json_tradeoffer", JsonConvert.SerializeObject(offer)},
                {"captcha", string.Empty},
                {"trade_offer_create_params", JsonConvert.SerializeObject(offerToken)}
            };
            return
                _web.Fetch(url, "POST", data, container, false,
                    string.Format("https://steamcommunity.com/tradeoffer/new/?partner={0}&token={1}",
                        IdConversions.UlongToAccountId(partnerSid), token), false, 10000, 20)
                    .DeserializeJson<SendOfferResponse>();
        }